Overview

• Witherspoon posted a Sept. 26 Instagram carousel celebrating Tennessee’s 13th birthday, featuring mother‑son snapshots from a boat and travel in Italy.
• Her caption praised his joyfulness, sense of humor, and curiosity, opening with, “How is it possible that my youngest boy is 13?!”
• Images show Tennessee with a bleached‑blond haircut, including a buzzed style noted in one balcony photo.
• Celebrity friends chimed in publicly, with well‑wishes from Goldie Hawn and Octavia Spencer and a teen‑mom nod from Sarah Michelle Gellar.
• Tennessee is her son with ex‑husband Jim Toth, and the post follows recent remarks about adjusting her parenting after 25 years of raising kids; she also shares Ava and Deacon with Ryan Phillippe.